Saw filing device



May 18, 1948. A. ZAPART SAW FILING DEVICE Filed July 5, 1946 4 Sheets-Sheet l a J INZVENTORZ rzarazu a an W Q May 18, 1948. A. ZAPART SAW FILING DEVICE 4 Sheets-Sheet 2 Filed July 5, 1946 will! mm m i M JQM. 0m b t f R All w- 4 "w. IIIII f l w! 4 MW; M

May 18, 1948. A. ZAPA RT SAW FILING DEVICE Filed Jilly 5-, 1946 4 SheetsSheet 3 MIIII l l l I l l l I I l I I I l I l l l I I l l l I I I i M \g w E NW \@N\ w @T n u :3. B v QQ y 1948. A. ZAPART SAW FILING DEVICE I Filed July 5, 1946 4 Sheets-Sheet 4 INVENTOR.

Patented May 18, 1948 2,441,'zse I ew REY???- endrwiseeihl ee lrel e z lieeii n l .5, .1946, seen one I ii., l ei e r. (01.. 76:31..)

1 The present invention relates tosawfilingde: vices and has for its main objecttheprovisionof efiicientand comparativelysimple means fonregulating the degreeoflthedeptniof bite oia file. into 'a saw in order thatall filed .saw.teeth..may.

be of uniform size.

Another object of .the present invention. is the provision of means in..a saw filing device .forjlimr itingthe movement of :the file on horizontal plane in order to .bringabout; proper, uniformsp acing.

of filing operation withthe re'sultant uniform spacing of the .saw .teeth on horizontal line.,.

A still further object of .thepresentinvelltion isthe provisionof means .in.a sawfiling device wherebythe file} after completionfoffiling. operationfupon one sawtoothmav be lifted from the.

saw," thenv engaged. with the adjacent tooth ,tov be filed, and .when solengag'edthe file may be shifted ona horizontal plane to bring the adjacent toothv to .befiledto the. position properly distanoed;from the preceding tooth beforeth'e filingoperation is commenced.

A still .further objectof tnepresent. invention. isvthefprovision of .means for guidingthe fileiini.

- 25 A still further. object of the present invention its filing operation:

is the provision of meansfor guiding the file angue 1ar1y.,,on vertical plane for. liftingthe file frorn Fig. 1. is. a .top;e1ev1a.tiona1.view.v of th present device; Fig; 2. is a side elevational View thereof;

Fig. '3'; is a front .end elevational 'ViBW...the reoi illustrating also the saw, jcarrier, whilefsupporting'ah'and. saw, theview having, been,ta l;en ;sub.-

stantially on line 33 of Fig.; 2

'Fig'. 4 is afr'ohtelevational view-of a saw. carrier. for? supporting a circular .or, a; band saw. the? view. illustrating..- also various 1 positions of the "file? preceding, and during. shiftin operation the.saw..af.te omp ion.of.-fi i e;op r t n nd.

forshifting the same downwardly. to the .SaW. p1fe-.-

cedin th fi i oper -t e nd u di th fi e on: a. hor zontal. p an o n a in a saw. ooth and e y l iit ne. he saw. a det rined distance p io h mmenc me t. iz

filing operation. I r 7 v v ti11 fur er obje t o t e, presen n en i n. is the provision of a suitable saw carrier in com:

of La band saw;

"Fig. 5 1's aside eleyationalviewofasupport ing member for supporting; a circular or] a band saw; V v

Fig. Gris a cross-sectionalview online fig-Qoi- Figs. 1and .2;

Fig. 7 is across-sectional view. on;line;'I-.-'| of, Figsslranulz;

sis-an enlargedcrossr-sectional view;.0n. line ig. "9 isan enlarged cross-sectional View on line 9-9 of Fig,

10 is an "enlargedi cross-sectional View .on lin-l'll lfl' of'Eigl'2i"" Fig- 11 Jsa; crbss-s'ectionalview on line I I.-| l. o fFi'g,3;.'

"Fig". 12 1s a cross-sectiononli'ne 1'2-4-42 of Fig. 3.;

Fig." 13 is a; crossisectior'rohjine l3'-.-l hot-Fig. 3; and

Fig; 1T4iis a side elevational view. of.a.collar em ployed -for.supporting aicircular. saw.v

Referring; to"fthe': present. drawings... there. is sho'wn'the'rein supporting" frame l.4,.inc1 uding a pair "of spaced sidewalls l5, andltopwla'll l6;

"* which rigidly connects with the upper; edges ,of.

' nati i h efilin dev ce or. u portin he on. a iou y o ws uch as. i u a saw; hand sawandbandsawr A still further object. of the present. invention is them v s en, i a sawfi in device. f means, for. limiting the longi udin l..m0vem nt..ofthe file.

With the, above generalobjects in viewand others thatwill appear as the invention. is better. understood, the same .consistsflin'. the novel I construction, combination and" arrangement. of parts.

hereinafter more .fully described, illustr'atediri. the accompanying drawing and poin'ted. out in theianpendeduclai'ms.

. In. the drawings forming .a part oithis. application; f and in which like designating characters refer to correspondingparts throughout The sev'- f 2' 1 an oral tiewszff i said sidewalls Ira-land Tadjacnt. their front ends. La'te'ral'ly extending -fr6mf'th. lower :edgesf of. side walls 15 fare wings ",1 which areprovided. with a 'pluralityfof. aperturesrlB. through which. screws aie paSSdgfOr rigidlyfiaflixing frame M: to abench lor other. like .s'upport." FnontwallQlQ integrally formed. with. the .front. ends of .said. side walls 1'5, top wall [6 and wings I! completes the"structureofs'aid.frame I44,

Intgrally formedwith the rear ends of side.

wa1ls*l 5 fandae'xtendingfrom. the. upper edges there'oi is aiiarciiate' strip :zmwnmn is in a1in'e-' mn't with' saidtop wall-116.". Scale T21" .i urini'ng in both directions fronr-th center of :saidstrip 20; and representation F of cinch frictionsiis made" upon the'fipperTface'offsaid' strip',ifor the purpose latiarde'sciibed; Pivotally .afiixedQtothe underface of top .wall I s by .fmean :ofrscrew .21 is :aniioblo'ngifiat arm arm 23 upon its pivot 22, for the purpose hereinafter described. The rear; end of said arm 23 terminates in eye 28. Receivable within said eye 28 is collar 29 Passing through said .Gollar 29 and through the horizontal walls of said eye 28 is post 39." Pin 3|. passing through; said collar 4 ceiving the adjacent, tapered end of file 46 as seen in Fig. 2.

Either affixed to, orintegrally formed with top wall l6, and upwardly projecting therefrom is a pair of spaced standards 41, whose front faces are flush with the front wall I 9 of frame l4. Affixed in any suitable manner to said standards 41, and interposed therebetween,adjacent their upper ends is a horizontal rail 48, which has an integrally formed and rearwardly depending pro- V jection 49, centrally of said rail 48. Freely journaled within each standard 41, s el a t .finxs'aid projection 49, is screw 59, the outer end .of which has, an enlarged, knurled knob 5|, ad-

29 and post 39 holds the two rigidly connected. Y

The horizontal walls of said eye .28 prevent lateral shifting movement of said post 39, while collar 29, interposed between said horizontal walls of eye 28, and pin 3|, prevent the upright shifting movement of said 13051330. Post 39 is capable of making rotary movement, with collar 29.v

' Said post 39 constitutes a pivot for guiding bar 32, through which the latter extends adjacent the upper endthereof.

Set upon the rear end of guiding bar 32 is yoke 33, the side walls of which extend downwardly and beyondthe lower edge of said guiding bar 32, to receive therewithin stop 34, which is maintained in a pivotal engagement with the side walls of said yoke 33 by pin 35.. Set screw 36 passing through the rear end of said stop 34 is adapted to angularly shift the same upon pivot 35 for bringing the opposite end of said stop 34 into a, strong frictional engagement withbar 32. Upon release or screw 36,'yoke 33" may be longitudinally shifted upon bar 32. Saidstop 34 constitutes means for limiting the shifting movement of bar 32 within post 39. WhenJstop 34 comes in contact with post 39, further shifting movement of bar 32 is prevented.

Cooperating with guiding bar 32, and ina parallel vertical relation therewithiand disposed above it, is'anothe'r guiding bar 31, whichjs disposed above the upper termination of=.post 39. Set upon said guiding bars 32 and 31, adjacent the rear end of the latter and forwardly of-post 33 is clamping member 38, provided with a pair of spaced recesses'within which guiding bars 32 and 31 arereceivable. Plate 39 fitting, Within a correspondingv recess made; in 'one} side of said clamping member 38, frictionally contacts with the adjacent faces of said bars. Screw 49, passihg through the body of said member 38 andbetween guiding bars 32 and 31,:receives wing nut 44, by means of which plate 39ris maintained in' naled within said leaves 42 for-longitudinal shift tudinal movement thereof. Set upon each screw jacent the-outer side face of standard 41, by

"meansiof which screw 59 may be manually rotated ln order that either of said screws 50 may not become disengaged from its respective standard or from projection 49, each has a circumferential groove 52 made in the body portion reposing within standard 41, wherein inner end of screw 53 isreceived; Screws 53 permit rotary movement of screws 59, but prevent the longi- 59,-in a threaded engagement is nut 54, interposed between projection 49. and the adjacent standard 41. Each nut 54 contacts by one'of its walls the adjacent wall of said rail 48, which arrangement prevents rotary. movement of nuts 54,'but permits their sliding movement toward or away from projection 49 when screws 59 are rotated by manual turning of knobs 5| The means'for supporting the front ends of guiding bars 32 and 31 and of the front end of file 46 and for permitting their angular shifting movement on horizontal plane, is composed of a suitable carriage which includes a pair of arms 55, alined'and spaced on a vertical plane, and integrally formed with, and forwardly extending from upright 56. overhanging said rail 48 and projection 49 is an L -shaped extension 51 which is integrally formed with, and rearwardly projecting from, the upper end of said upright 56. Integrally formed with the lower end of said upright 56, and rearwardly extending therefrom is lug 58, which is set upon'pin 59 for freesliding movement thereomsaid pin being passed through. standards within which the same is frictional-- 1y held. By virtue of the above arrangement said.

in knurled knob 63, resting upon upper arm 55.

The lower end of said shaft 62 is grooved to be engagd by'screw 64, passed laterally of lower arm55. Nut 65,in threaded engagementwith shaft 62, remains i contaot by one ofits side ing movement isrod 43 having pin 44 transversea ly' passed therethro'ughiand adjacent the front 7 leaf ,42. Set upon said rod 43 and interposed between the rear leaf 42 and said pin 441s com-r.

faces with the adjacent face of upright 56, Nut 65 constitutes the means for limiting downward shifting movement of post 69, because, as pin 6i comes in engagementwith said'nut 65,:further downward shiftingmovement of pos't'69is prevented; To regulate the extent of the downward shifting movement of post 69, the position of nut 65 on vertical plane may be adjusted by rotatside of recess 84 is 7 formed, and horizontally and forwardly extended oted upon screw thereof.

of each handle 81, and forwardly-disposed with-4; relation therewith is a downwardly projecting, inclined plate 89, with which has an oblique edge 59!.

normally in contact as indicatedby dotted' lines in Fig. 1. -Attached by means .of' screw 92 to that Jaw edge forwardlyexposed, as seen in Fig. 1, is "L- shaped lip within whichsaid barsfiland 31 areaccommodated, roller .61 being :interposedlbetween .said

bars 7-32 and :31 for facilitating their sliding movement within -said recess. Said roller 61 is journaledupon pin as.

The front ends of \saidguidingbars :32 and 3:1 are lrigidly held within stock .fifl from which handle ;'i0 downwardly projects. Both saidstock 15.9 and handle) are made of apair of complementary plates H joined together by aplurality of screws 1:2, by means. of which said front .ends of said guiding bars 32 and 31 are .firmly ;clamped-withinstock fi9.

Disposed .rearwardly of stcckcfiil is a pair oi clamping plates 13, 'having complementary recesses :"for receiving said-eguiding harstland .37. .andzwhereinthey. are held ina firm clampedposition-by means of screw M.

.Filez ifi, .whichis of triangular formation on 1transversecrossesection, has areduced polygonal front end 75, gradually tapering towards its free vertical portion of which skirts the rearward ed sof sa d. Jaw i .inspaced re atio an mains in a horizontal, spaced alinenient withthe ,rree ed e of ton u :85- Th reces defi y said to uesand said li 1 5515 dapted o ceive hez o e d vv f a saw,; ndiea Figs. 2 and 3,-ior the purpos hereinafter stated. The outer end of each handle 58;! is-provided with a downwardly-projecting pin fid rear-wardly of which the outer endof ,wire Spring $5 is ene se The i e endpfeachsrrinsii isp through aperture g6 made in the'upper end of pl te B3 on, cnside of r ce s ii eildeneae to said plate 83rearwardly thereof. Said springs .95gt6i1d to urge thedreeends ofhandlest'i for- .wardly, therebl u g ng .the free ends of jaws 90 rearwardly and towards tongue #55. This action of springs 95 m.incapablephowever, to {bring said end, thelatter entering within a corresponding boremade in appendagetis downwardly projecting from-stock 69. .Said reduced end '85 islocated centrally and longitudinally of collar E1. The rear .end of collar 11 has a pair of diametrically spaced,longitudinal projections 18, which are receivable within corresponding recesses :made in: the margin of disk 19. Thus, disk '19 is rigidly engagedwithcollar H and is prevented from making rotary movement, independently of collar 11. Centrally said disk 79 is-providedwith a polygonal bore corresponding to the perimeter of; end 15 at. that point, thereby, keying the same to disk 19 andcollar l1. Collar I1 is receivable -.within semi-annular complementary bores made in clamping plates. '13. Screw 8i! and the engaging wind nut'8l, the former passing through the slower. ends of plates 13, firmly clamps said collar :il normally preventing rotary or longitudinal .rnovement thereof, thereby maintaining disk :19 1 has-well as file 46 in their adjusted positions,

Spring urging rod 43 towards file 46 alsodrives the reduced end of said file 46 in engage- ..ment'with disk 19 as well as within bore of appendage 16.

Afiixed by means of screws 82 to-the front wall -l9 is plate 83, which extends above top wall it and is centrally recessed as at 8%, integrally "formed with said plate 83, and within the lower =margin of recess -extending tongue 8 84 is a horizontal forwardly 5,for the purpose later described. The upper end of said plate 83 on each provided with an integrally ledge 86.

"Ea'chof said ledges 85 supports handle 81 piv- 83 passing therethrough and 36 adjacent the inner end engaging said ledge formed with the inner end Integrally 9c which'has the-maximum .93; the horizontal portion :of .which overlies the free ends of said jaws flllawhile-the jaws ,93 incontact with tongue 851 1oecause the vertical portion of lip 93, skirting the rearedges of jaws 190, prevents such result ,and maintains the same ina spaced relation with-tongue $5.

. wDue to :the. obliqu contactin eda se h free en-dsof jawszqfi as well.-as ll oy vi tue of the fact that the vertical portionoi 1 ip; 9.3;1S; in alinement with saidjaws; 9H onhorizontalplane, man- ,ual pressure impartedto the freeend of either handle lat-and against theaqtienof springs 95, will cause the angular shifting movement of both jawsfifi awayfrom tongue :85, aswell as, the shiit :ing .movement of said'lip fidaway "from said tongue, for the purpose of .wideningthe recess between said tongue 28.5; and lip ;93 for ;faci1itating withdrawal of;the toothed-edgewof a saw.

I .Th-is. shifting movement of jaws- -and .of lip 93 is facilitated byzthe-rfactthat. the vertical portion. of lip -fi3isuspaced from the rear-edges of said jaws. 9B. Normall both tongue-.85 and lip 93 contact with the opposite faces .oia saw when within the recessdefinedhy the two, the former constituting means against which. the saw bears during filing operationwhen file .246 is shifted zrearwardly, that is away from the-operator, and

the-latter preventing. undue vibration of a saw wand the resultant-faulty action of. the? file on the I saw teeth during the filing. operation. Of course,

when the manual.pressureuponhan-dles 81 is released, jawsl ll andgliptiassume normal operative positionishownlin.Figs, 1 and-=2, due to the action of said springs .55.

. .rAttached .to..plate :83=by. means of screws 5'! is anoblong plate:=.98having recessed fiange 99. :Portion of the loweredge-of plate 83 is grooved as -.at 559. The recess oiflangehtl.and-groove WE! are in .a vertical alinement and; constitute the means of mounting the saw carrier presently de- .scribed.

.rfiaid (saw .carrier includes-an oblong plate i 0 l receivable by .its edgeswithin recess in flange 99 and groove sec. Aifixed to said plate NH by 'means of screws. K2 are three pairs of rails Hi3,

.,- arranged vertically and. all on the, same plane.

,Each rail liltismaintained in a spaced relation frornplate M! bymeansoi lug. ,lil l interposed between saidplate 10 l and said rails I 63. Screws :lfihpass throughsaid lugs 194, as seenin Fig. 13. Bracelet, rigidly engaging the lower ends of rails .193 constitutes an additional means for maintainaing thelatterin a rigid mutual relation.

:-'For supportinghandnsaw10.5, apairof clamp- .ing plates iillisflprovidedjeaoh to coast with the outermost.pairshf rails Add; :Eachoi said clampglingzplates Jill cooperates h bolt;;l08 which is --.-threaded atrits-free end. heoppflsi el d of sa d boltis-integrallyiormed with head, 1! Be. -The latter engages in contactual relation a pair of rails igaging the threaded end of bolt I08, maintains clamping plate I! in a strong frictional engagement with saw I06 when the same is interposed between the front faces of rails i 03 and clamping Iplates I01, as seen in Fig. 12.

Hand saws are usually made of tapering for- -mation. To maintain the toothed edge of hand saw I09 in a horizontal plane, its lower edge is at an incline, with clamping plates I0I adjusted within the outermost pair of rails I03 to the lower Ifree edge of the saw, as seen in Fig. 3, and there- 'upon clamped thereto by turning wing nuts IIO against plates I 01.

For supporting either a circular saw I25 or a band saw I IT in the operative position for filing and upon the saw carrier hereinabove described a V-shaped supporting member H2 is provided. Said member II2 coacts with the innermost pair of rails I03. Its lower, narrower end is provided with a rearwardly turned tongue I I3 which enters the space between said rails I03 and thereby constitutes a means for guiding said member H2 in its upright sliding movement along said rails I03 and for maintaining the upper end thereof on a horizontal line. The upper, wider end of said supporting member H2 is bifurcated effecting a pair of arms II4 with the resultant central recess II5. Each arm II4 has lug II6 struck out from its body portion and disposed away from, and forwardly of the plane of the body portion thereof for supporting the lower, smooth edge of band saw III', as seen in Figs. 4 and 5.

Cooperating with said member H2 is a clamp including bolt II8 having head II9 integrally formed with its rear end, for engaging the pair 'of innermost rails I03, rearwardly thereof, as seen in Fig. 5. Disposed on said bolt H8, and forwardly of rails I03 is spacing washer I20. Receivable upon said bolt I I8 is collar I2 I, provided at its front end with a fiat boss I22. The latter receives an oblong clamping bar I23 having an oblong slot at its center for accommodating therewithin boss I22. Wing nut I24 is threaded engagement with the front end of bolt II8 urges the rearwardly turned ends of clamping bar I23 into a strong frictional contact with the front face of circular saw I25 when the latter is inserted by its central opening upon collar I2I and interposed between washer I20 and clamping bar I23. Washer I20 prevents circular saw I25 from contacting directly with support H2 or rather with lugs II6 and'provides clearance past said lugs II6.

Support H2 is adapted to shift along the pair of central rails I03, either to or away from the recess defined by tongue 85 and lip 93 depending upon the width of band saw III or the diameter of circular saw I25. When filing operation is to be performed on a circular saw of a comparatively large diameter, bolts I09 and clamping plates I0I may be removed from the outermost pair of rails see. or if desired said bolts I08 may be inserted within slots I26 made adjacent the ends of plate 9 and in the proximity of the upper edge of plate IOI for effecting engagement of plates I0I with the upper edges of plate IOI as is seen in Fig. 4. This will constitute additional means for anchoring plate IOI to plate 98. The'upper ends 8 of slots I26 are enlarged for permitting free in sertion therethrough of heads I09.

When hand saw I06 undergoes filing operation, supporting member II 2 is lowered upon the innermost pair of rails I03, as seen in Fig. 3, the same may be shifted until head II9 comes in contact with brace I 05. 'Or the same may be entirely removed from the saw carrier either by disconnecting wing nut I24 from bolt H8, and thereupon removing clamping bar I23, collar I2I, washer I20, support II 2 and bolt H8, in succession, from the innermost pair of rails I03. Or, if preferred, the saw carrier may be removed from its engagement with plates 83 and 98 by longitudinally shifting plate IOI until the same is freed from recessed flange 99 and groove I 00; and thereupon support II2 may be bodily removed from the carriage by shifting the same upwardly until bolt H8 is freed from the pair of rails I03 within which the same has reposed. 'Ihereupon, reinsertion of plate IOI within flange 93 and groove I00 will recondition the said carrier to support hand saw I06 by clamping plates I07, with the carrier unobstructed by support I I 2 and its appurtenances.

It is noted that when a circular saw is set upon collar I2I, and clamped to washer I20 by clamp I23, both said washer I20 and lugs IIS will be in the way for the saw to remain in a perfect alinement with recess defined by tongue 85 and 'lip 93. Slight bending of thecircular saw while the same is shifted upwardly with support II 2, in order to guide the same within said recess, will cause the toothed edge of a circular saw to enter said recess and remain therewithin when wing nut I24 is tightened. Lip 93, bearing against the front face of a circular saw, and adjacent the toothed edge thereof, will tend to maintain the same in the operative position within said recess during the filing operation.

- The bending aforesaid will not be unduly interferred with by said lugs IIS, because said'lugs IIB will be removed a comparative distance from the toothed edge of a circular saw, particularly of astandard size, as visualized in Fig. 3, thereby permitting yielding of the saw, particularly when it is considered that arms I I4 themselves will yield'into a rearward direction when under the yielding pressure of the saw upon said lugs H6, by virtue of pressure exerted upon the saw by clamp I23.

From the h'ereinabove description it-will be seen that the function of rod 43 is to support I9. Since said rod 43 is longitudinally yielding due to theaction of spring 45, files ofvariable i lengths may be inserted between appendage I6 and rod 43, to be supported thereby in a longimay be shifted upon from handle I0.

tudinal position. To accommodate. files of greater or smaller lengths clamping member 38 I bars 32 and 31 to or away To adjust file 46' transversely of the longitudinal axis thereof in order that the operative filing edge thereof may be in a proper angle with relation to the saw teeth, as suggested by the two positions'of file 46 in Figs. 3 and 4, wing nut 8I is loosened for permitting rotary'adjustment of collar Ti," thereby rotatably shifting'disk I9 and'fi le 45 therewith. On tighteningwing nut 3| collar? 1! will be held in a'strong frictional,

Y adjustedplosition With clamping plates l3, thereby maintaining disk I9 and file 46 in theiradjusted positiond Thedeg-reeof bevel-of: the saw teeth to be filed is regulated by theposi-tion of.- pi-vot30 with relation to striplil, as, well, as by nuts 54. On loosening wing nut 21, arm 23 with-lip 2 5,- may be angularly shifted along scale 2I.-, thereby adjusting the rear ends of guiding bars- 32v and 31 and consequently the rear end of file 45., angularly with relation to the plane of the saw remaining within recess defined by tongue 85 and lip 93; The three will be maintained in that adjusted position by virtue of the engagement. of guiding bar 32 with post 3 3.. The front ends of said guiding bars 32- and s1 and of file 46, are angularly adjusted on, horizontal plane by nuts Each nut 54 constitutes. a stop guide for carriage 555556, by Virtue, of contact therewith by L-shaped extension 51. When said contact is maintained file 46 when longitudinally shifted during the filing operation will be guided in a straight line by virtue of the con nection of file 46 with said carriage through the medium of bars 32 and 3,1 and post- 60. When during the filing operation handle is down wardly pressed and rearwardly shifted away from the operator, with pressure exerted thereupon for instance to. the left direction, left nut 54, as seen in Figs. 3 and 11 will then be contacted by extension 51, preventing further lateral movement of the carriage toward the left, thereby guiding file 46 in a straight, predetermined line for filing uniform bevel in all saw teeth to be filed. A

There is another function for said nuts 54, namely, they provide guides for angular shifting of file 46 for the purpose of engaging saw teeth, on completion of filing operation upon a pair of adjacent teeth, for bodily shifting the saw for bringing the adjacent pair of teeth to be filed in proper relation with file 46 preceding the filingoperation thereon. Reference is, had to Fig. 4 wherein file is shown in four positions,

A, B, C, and B; Let it be assumed that position A of file i6 is immediately after said file has completed the'filing operation upon teeth I21 and F28 along their adjacent slanting edges, and it is. desired to bring' teeth I29 and I30 to the position of teeth I21 and I28, respectively, preparatory to the commencement of the filing operation upon. the adjacent edges of said teeth H29 and lat. To accomplish this object, file 46 is angularly shifted on a vertical plane to position B, thereupon angularly shifted on hori zontal plane to. position C. Said latter position ispredetermined with relation to the teeth distances and regulated by adjustmentof right nut Thelatter preventing further shifting, of file QSto the right. From position 0 file 46 is shifted directly downwardly exerting manual pressure on handle into the right for guiding downward shifting of file 4 5 onvertical plane, as determined by the adjustment of the right nut 54 for bringing said file intorecess between teeth 129 and fail, or position D of file 46. When in that latter position, file 45 engage tooth I29 and bears thereagainst. Shifting, the file to the left on horizontal plane from position D, the file, due to its engagement with tooth I 29 shifts bodily saw i l? until file to comesto position A with teeth E529 and 13s assuming the position of teeth i2? and :23 theretofore held by the latter. Of course the extent of that latter shifting of file ie .is regulated by the adjustment of the left nut M as already mentioned.g1n the example given teeth of saw H! were so shifted as to omit the recess between teeth" I28 and I29, "as is. required in cross cut, saws. The shifting of saw by the operation of file 46 willbe accomplished with equal, facility on hand, band, or circular saw. The latter instead of shifting will simply make rotary movement on, collar I2I.

Post 30, dueto its pivotal connection with arm 23, throughcollar 29 and eye 28, and its engagementwith guiding bar 32, permits pivotal, angular shifting. of file 4.6 on horizontal plane.

The recess in post 30 within which bar 32 is accommodated, as Well as recess66- in post 60, within; which bars 32 and 3.! are accommodated, are both longerthan the vertical width of the respective bars accommodated therewithin, therebypermitting angular shifting of said bars on vertical plane when file 46 is lifted away from the saw on completion of the filing stroke. Post 60, being free to move within, arms 55, to the extent permitted by pin 6|, allows considerable angular shifting movement of file 46 on vertical plane. I v

The function of pin 6i and nut 65 is to regulate and predetermine theextent of the depth of,- files bite into. the saw during its filing operation. By rotating shaft 62 into one or the oppo-. sitedirection nut 65 is shifted upwardly or downwardly. During inception of the filin operation pin 6| will be disposedabove nut B5,'and when the filing action has been completed, andfile 45 has bitten into the saw metal to the fullest extent permitted by pin 6!, said pin 6! will then contact said nut 65 preventing further biting into the saw. By this means the depth of all recesses and all teeth in the saw will be of uniform depth.

Bars 32 and 31 and file, 4B are-mutually inter? connected through stock;69 and clampsv 38 and l3, so that when handle 18 is shifted either vertically or laterally all said parts shift bodily and simultaneously. I

The filing operation takes place when handle i0- is pressed downwardly and laterally to engage Lsshaped. extension 51 withone of the two nuts 54 for guiding file 46 on a straight line, and file 45 is shifted away from the operator or towards post 30. File 46, riding upon the saw teeth dur: ing filing operation will tend to press'the adjacent body portion of the saw below its teeth to tongue 85. The latter acts as a rearward support for saw during filing operation. Any vibration of the saw due to its tendency to spring away from tongue will be prevented or minimized by lip 93. I 1 So as to save the operator considerable degree of lost motion, which otherwise would ensue, by unnecessarily longitudinally shifting file 46 into one or the opposite direction, yoke 33 and stop 3.4, when the latter comes in, cont-act with post 3i], provide means forlimiting shifting movement of file forwardly, or towards the operator. The lower ends of clamping plates 13 comingin contact with jaws constitute means for limiting the shifting movement of file 46 rearwardly, away from the operator, when file is used in the saw filing operation, Stop M'may of course be adjusted longitudinally upon bar 32 depending upon the length of file 46.

From the herein-above description it will be apparent that the degree of bevel of the teeth is determined by the angular adjustment of arm 23; upon its pivot 22. When said arm .23 is adjusted tov a desired angle as predetermined by the deree of bevel upon the saw teeth desired to be cut by the file, then wing nut 21 is tightened to rigidly connect said arm 23 with strip 20. As seen in Fi 1 1idi r 23 being, in a substantially perpendicular relation with saw I06, the bevel to be cut uponthe saw teeth by file 46 will be at right angle with relation to the longitudinal axis of the saw. Arm 23 is adjustable airstrip 20 in either direction from the center of the latter, thereby permitting filing operation upon saw teeth regardless whether the teeth are turned to the right or left. Cooperating with the right or left position of arm 23, and consequently of post 30, is right or left nut 54, respectively, for laterally supporting file 46. on one or opposite side thereof. Of course, when post 30 is on the left of the center of strip 20, as viewed from the point of vision of the operator, right nut 54 constitutes the lateral guiding support for the file, and vice versa.

The pitch to be cut into the saw teeth is regulated by the means for rotatable adjustment of file 46, including collar 11, disk '19 and clamp 13-13. The various file adjustments transversely of the longitudinal axis of file 46 are suggested by two positions of the file shown in Figs. 3 and 4.

The means for regulating the depth of the cut by the file into the saw includes pin 6| and nut 65.

While there is describdh'reir'i preferred em bodiments of the present, invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

What I claim as new is:

1. A saw filing device comprising a fi1e,' a frame, means for supporting a saw in a substantially transverse relation with said file, a guiding bar rigidly afiixed to said file and in a spaced relation therewith, means for supporting said guiding bar adjacent one end of said file, said means being angularly adjustable with relation to the longitudinal axis of the saw for determining the angle of bevel to, be cut in the teeth thereof by said file, a pair of standards supported by said frame, a carriage supported by said standards, said guiding bar being supported by said carriage adjacent the opposite end of said file, said carriage beingadapted for shifting movement to one or the other of said standards along a path substantially parallel with the longitudinal axis of the saw, and means for limiting the'shifting movement of said carriage in either direction for maintaining said file during the filing operation thereof along the path coincidental with the angle of bevel as determined by the angular adjustment of said second named means. 7

2. A saw filing device comprising a file, a frame, means for supporting a saw in a substantially transverse relation with said file, a guiding bar rigidly aifixed to said file and in a spaced relation therewith, means for supporting said guiding bar adjacent one end of said file, said means being angularly adjustable with relation to the longitudinal axis of the saw for determining the angle of bevel tobe out in the teeth thereof by said file, a pair of standards supported by said frame, a carriage supported by said standards, said guiding bar being supported by said carriage adjacent the opposite end of said file, said carriage being adapted for shifting movement to one or the other or said standards along a path substantially parallel with the longitudinal axis of the saw, and means for limiting the shifting movement of said carriage in either direction for maintaining said file during the filing operation thereof along the path coincidental with the angle of bevel as determined by the angular adjustment of said secand named means-said last named means including a pair of stops, one on each side of said carriage, said stops being adjustable to or away from said standards. 7

3. In a saw filing apparatus, having a frame, a file, and a saw supporting member for supporting a saw in a substantially transverse relation with said file, a device for regulating the depth of the teeth to be made-in the saw by the file during the filing operation of the latter, comprising a guiding bar affixed to said file and in a spaced reltion therewith, a post, said post being provided with a recess within which said bar is receivable for longitudinal shifting movement, a carriage supported by said frame, said post being receivable by said carriage, said post being adapted for sliding movement in said carriage to or away from the saw, and means in said carriage limiting the extent of the sliding movement of said post toward said saw.

4. A saw filing device comprising a file, means for supporting a saw in a substantially transverse relation with said file, a guiding bar rigidly affixed to said file in a spaced relation therewith, means for pivotally supporting said guiding bar adjacent one end of said file, said means being adjustable in a longitudinal relation with the saw, a pin rigidly supported in a substantially parallel relation with the longitudinal axis of the saw, and a carriage supported by said pin for a longitudinal shifting movement thereon, said guiding bar being supported by said carriage adjacent the opposite end of said file said second named means and said carriage as the same is shifted upon said pin coacting for determining the angle of bevel in the teeth of the saw to be cut by said file.

5. A saw filing device comprising a file, means for supporting a saw in a substantially transverse relation with said file, a guiding bar rigidly affixed to said file in a spaced relation therewith, means for pivotally supportingsaid guiding bar adjacent one end of said file, said means being adjustable in a longitudinal relation with the saw, a pin rigidly supported in a substantially parallel relation with the longitudinal axis of the saw, a carriage supported by said pin for a longitudinal shifting movement thereon, said guiding bar being supported by said carriage adjacent the opposite end of said file, and means for limiting the shifting movement of said carriage in either direction, said second and said last named means coacting for predetermining the angle of bevel in the teeth of the saw to be cut by said file.

6. A saw filing device comprising a file, means for supporting a saw in a substantially transverse relation with said file, a guiding bar rigidly afiixed to said file in a spaced relation therewith, means for pivotally supporting said guiding bar adjacent one end of said file, said means being adjustable in a longitudinal relation with the saw, a pin rigidly supported in a substantially parallel relation with the longitudinal axis of the saw, a carriage supported by said pin for a longitudinal shifting movement thereon, said guiding bar being supported by said carriage adjacent the opposite end of said file, and a pair of adjustable stops, one adjacent each end of said pin, said second named means and said stops predetermining the angle of bevel in the teeth of the saw to be cut by said file.

7. 'A saw filing device comprising a file, means for supporting a saw in a substantially transverse relation with said file, a guiding bar rigidly afiixed to said file in a spaced relation therewith,

a post pivotally supporting said guiding bar adjacent one end of said file,'said post being adjustable in a longitudinal relation with the saw, a pin rigidly supported in a substantially parallel relation with the longitudinal axis of the saw, a carriage supported by said pin for a longitudinal shifting movement thereon, said guiding bar being supported by said carriage adjacent the opposite end of said file, and means adjacent the end of said pin for limiting the shifting movement of said carriage, said post and said means determining the angle of bevel in the teeth of the saw to be cut by said file.

8. A saw filing device comprising a file, means for supporting a saw in a substantially transverse relation with said file, a guiding bar rigidly aflixed to said file in a spaced relation therewith, a post pivotally supporting said guiding bar adjacent one end of said file, said post being adjustable in a longitudinal relation with the saw, a pin rigidly supported in a substantially parallel relation with the longitudinal axis of the saw, a carriage supported by said pin for a longitudinal shifting movement thereon, said guiding bar being supported by said carriage adjacent the opposite end of said file, said post and said carriage permitting longitudinal sliding movement of said guiding bar, and adjustable means adjacent the end of said pin for limiting the shifting movement of said carriage, the adjustment of said post in a longitudinal relation with the saw and the adjustment of said means predetermining the angle of bevel in the teeth oi. the saw to be cut by said flle.

ANDREW ZAPART.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 35,935 Hawley July 22, 1862 409,866 Penrose. Aug. 27, 1889 424,724 Penrose Apr. 1, 1890 527,332 Howard Oct. 9, 1894 566,003 Mitchell Q Aug. 18, 1896 648,932 Duquemin May 8, 1900 847,804 McAulay Mar. 19, 1907 910,893 Becker Jan. 26, 1909 1,087,373 Holmes Feb. 17, 1914 1,728,393 Collier Sept. 17, 1929 1,923,445 Loibl Aug. 22, 1933 1,994,332 Baze Mar. 12, 1935 2,310,517 Collier Feb. 9, 1943 2,323,527 Ewers July 6, 1943 FOREIGN PATENTS Number Country Date 67,620 Switzerland Feb. 19, 1914 84,300 Sweden Sept. 11, 1935 

